the government warns that putting the plans on-line could violet export laws. before they disappeared, they were downloaded 100,000 times. we have been following a developing storyl for months now. wjz eyewitness news investigations. vic carter looks at why the internet and 3d printers could make homemade weapons the next battle. >> reporter: good morning, everyone. information on the internet is making gun control more difficult. >> shock waves from the boston marathon bombings rippling across the nation. investigators learned that the pressure cooker bombs that the suspects built that killed three and injuries hundreds. was found on how to manuals people can get on-line. >> a mirror image, or exactly from the manual. >> reporter: now you can learn more than bomb making on the internet, if you the money to buy a 3d printer and knows how to make guns you can make it in your home. >> you're making a gun. >> oh, absolutely. >> reporter: in the basement of his home, using a 3d printer, wjz eyewitness news found travis tinkering with technology, tea pots, chess pie